PRIVACY ACT MATERIAL REMOVED neriod is 6.4 MR (light fallout occurred on the RENDOVA during the early norming 4 November). Thus, the total integrated intensity to which YN3 was potenti... exposed during this period is 248.4 mR. This analysis assumes that between 1-4 Novemder, YN3 spent 60 percent of the day topside on the hangar deck with no shielding and +7 nercent delow decks. ‘While below, he was offered a shielding factor of 9.06 by the ship's structure (Reference 2). (Typically, a crewmember is assumed to spend 40 percent of the day topside and 60 percent below). The dose calculations for l-4 November are as follows: Dosey 4g Noy = (.25 R)(0.7 rem/R) [o.6(1) + 0.4(.06) | = 9.11 rem, During the period 5-13 November, it is assumed that YN3 spent approximately $5 percent of each day either topside (on the hangar deck) or on Japtan Island. Trios to Japtan are assumed to rave lasted for six hours. The free-field integrated intensities on the RENDOVA and Japtan during this time period are 59.3 mR and 62.2 mR, respective. 5: Agzga.1, while below deck, he was shielded by the ship's structure. The dose calculations the period 5-18 November are as follows: - Doses i Nov 7 (9.7 rem/R) [6/24(0.062 R) + 14/24(0.059R) + 4/24(.059R)(.06) | = 9.94 rem YN3 total gamma dose while at Enewetak during the period 1-13 November .s therefore 9.11 +0.04 = 7.15 rem. also states that he swam in radioactive water while he was a lifeguard on Japtan Island. Water samples were obtained off Miramar Beach (Parry Island) on 3, 4, 6, 7, $8, 9 and 17 November 1952. Activity was noted only on 4 and 6 November when water samoles showed activity concentrations (beta-gamma) less than one-tenth the maximun permissible cOncentration; it was concluded "that swimming at Miramar Beach invoived ~> “aczard Decause of radioactivity" (Reference 6). Samples obtained between Parry anc Jas" islands revealed even less activity than those at Miramar Beach; hence, swimming Japtan would have provided no significant dose contribution. DOSE DUE TO INTERNAL EMITTERS During YN3 exposure to contaminated helicopters in the ad perio |-4 November, the possible inhalation of resuspended fallout is considered. It is noted tnat PRIVACY ACT MATERIAL REMCVED